An evolutionary event in which a significant percentage of a population or species is killed or otherwise prevented from reproducing, and the population is reduced by 50% or more, often by several orders of magnitude.
There was a real populationbottleneck in our history.
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A host populationbottleneck therefore resulted in the exclusion of adult-acquired SIV and pegivirus from the Caribbean AGMs.
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Hihi have experienced what she calls a " severe populationbottleneck" which has caused a loss of genetic diversity.
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We found evidence of a small populationbottleneck and extensive use of ancestral variation often traceable to founders of cultivars from diverse geographic regions.
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Mostly, that's because cheetahs have an unusual lack of genetic diversity, thanks to a populationbottleneck 10,000 years ago.
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It appears that by a combination of mixed origin and a populationbottleneck, the Dutch and Danish Land-races are separated from the other breeds.
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A reason for this would be populationbottlenecks during the virus life cycle.
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This will help biologists to identify the populationbottlenecks in nature that underlie low recruitment rates.
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Novel environmental lineages emerged from sequential populationbottlenecks, carrying mutations potentially involved in adaptation to the aquatic ecosystem.
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Additionally, we found no evidence for either positive selection or widespread populationbottlenecks during the global expansion of canid RABV.
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Size and number of ROHs are in agreement with known demography of the populations , with populationbottlenecks highly increasing ROH occurrence.
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Domesticated species are an excellent model to investigate the consequences of populationbottlenecks on genetic and deleterious variation in small populations.
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Our results indicate that the timing and nature of populationbottlenecks can substantially shape the deleterious variation landscape in small populations.
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Here we report a quantitative estimate of populationbottlenecks during the systemic colonization of tobacco leaves by Tobacco mosaic virus (TMV).